He says one man, wearing civilian clothes, was carrying three guns and was shooting at everyone he saw.

VOA: standard.2009.03.30

At Fort Sumter, Major Robert Anderson and his men waited three hours before firing back at the Confederate guns.

VOA: special.2009.08.13

Three guns were recovered near the gunman's body: a Glock, a Sig Sauer and a .223 Bushmaster rifle.

WSJ: Dozens Killed in Newtown, Connecticut, School Shooting

At their trial the court heard three guns were found in the car.

BBC: Azelle Rodney death: Police 'shot suspect six times'

Three guns used by the two underage killers were purchased by 18-year-old Robyn Anderson at a Colorado gun show to avoid a background check.

CNN: Colorado governor to sign 3 gun control bills